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  • 42.65.Ky  (1)
  • solvent effect  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Efficient nonlinear-optical frequency conversion in periodic media in the presence of diffraction of the pump and harmonic fields (1999)
    Springer
    JETP letters 70 (1999), S. 811-818 
    Details
    ISSN: 1090-6487
    Keywords: 42.65.Ky ; 42.70.Nq
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It has been predicted by Shelton and Shen [Phys. Rev. A 5, 1867 (1972)] and observed by Kajikawa et al. [Jpn. J. Appl. Phys. Lett. 31, L679 (1992)] and Yamada et al. [Appl. Phys. B 60, 485 (1995)] that the efficiency of nonlinear-optical frequency conversion increases significantly in a nonlinear periodic medium and, accordingly, the intensity of the generated harmonic increases as the fourth power of the sample thickness, as opposed to the square law observed in homogeneous media. In this paper it is shown that the same enhancement of the efficiency of nonlinear-optical frequency conversion in a nonlinear periodic medium can be achieved using an ordinary pump wave in the form of a plane wave when both the pump wave and the harmonics are diffracted by the periodic structure of the nonlinear medium. The phenomenon is analyzed quantitatively in the example of second-harmonic generation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.568236
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  • 2
    Electronic Resource
    Electronic Resource
    Effects of polarity and temperature on photoluminescence of a europium(III) chelate (1996)
    Springer
    Russian chemical bulletin 45 (1996), S. 1596-1600 
    Details
    ISSN: 1573-9171
    Keywords: europium(III) ; complexes ; luminescence ; solvent effect ; temperature effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The relative photoluminescence yield for (1,10-phenanthroline)europium(III) tris-thenoyltrinuoroacetonate (Eu(tta)3Phen). an efficient enhancer of chemiluminescence, has been measured under the conditions (temperatures and solvents) specific for the oxidation of hydrocarbons. The yield is independent of viscosity and the presence of a heavy atom in the solvent, but the higher the polarity of the medium, the more the yield decreases as the temperature increases. The effect is interpreted as an acceleration of radiationless deactivation occurringvia the mechanism of electron transfer from a ligand to the excited Eu3+ ion.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01431793
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    Paper (German National Licenses)
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